message MessageWithMap { map name_mapping = 1; map msg_mapping = 2; map byte_mapping = 3; } message FloatingPoint { double f = 1; } message Uint128Pair { bytes left = 1 [(gogoproto.nullable) = false, (gogoproto.customtype) = "github.com/gogo/protobuf/test/custom.Uint128"]; bytes right = 2 [(gogoproto.customtype) = "github.com/gogo/protobuf/test/custom.Uint128"]; } message ContainsNestedMap { message NestedMap { map NestedMapField = 1; } }